A new study published in the journal Science show that Earth's water is older than the sun and originated from ice that was formed in interstellar space.

According to researchers, water is found throughout the Solar system, on icy comets, meteorites, the Moon and Mars.

Aside from that, the Sun also has ice found on its disks, which baffled the scientists for quite a while.

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They are wondering if the ice originated from its parental molecular cloud or it was reformed in a chemical reaction that took place in the solar nebula.

Conel Alexander, one of the researchers, said that if water in the early Solar System came from ice in space, then similar ice with prebiotic organic matter would be abundant in protoplanetary disks in forming stars.

However, if the water from the Solar system happened during the birth of the Sun, then it is possible that water varies from forming planetary systems, which would imply potential life in space.

To test their findings, researchers created a model that simulates the protoplanetary disk which showed an eliminated chemical processing of space ice.

Researchers also noted that they have to start over from scratch to produce ice with deuterium that mimics the state of the ice million years ago.

They said that they did this in order to see if the system can reach the ratios of deuterium to hydrogen in meteorites, ocean water and comets.

Researchers found out that this is not possible, meaning that some of the water found in the Milky Way came from interstellar space and pre-dates the Sun's birth.

Alexander said that their findings show a significant fraction of the Solar System in water which is older than the Sun.

He said that this indicates that organic-rich interstellar ice can be found in all young planetary systems.